The Reebok Indoor Bike Spinner offers a very heavy duty balanced 14kg flywheel to provide a super smooth feeling and action, and a unique and stable frame to boot. The key thing with spinning and spin classes is the use of a road style bike that has a perpetual motion flywheel action i.e. when you stop pedaling the flywheel and pedals continue to turn. This makes the action true to road biking, and burns more calories than using traditional exercise bikes that stop when you do. The Reebok Indoor bike is based on the Reebok club model, offering unbeatable high performance, and exceptional durability. With the added Gel seat for comfort, and variable handle bar and seat positions, every user can find a perfect cycling position.